Thread-cutting device for sewing-machines.



lNo. 875,512.

EATENTED DEE, 311 1907.'

E. EgEOsTEE; l THREAD CUTTING. EEVIGE EGE SEWING MA GEEEESEv AP'PEIOATION' FILED APE. 5,13'99,

zsEEETsl-SHEET 1.l

H. POSTER. Y THR'HAH CUTTING DHVIGH `TOR SEWING MACHINES.

'.NPTLI'GATION FILED ATB. 5. 1899. l

2 sHnHTs-sHH'HT 2.

'to a treadle,-conveni ent tothe foot of the operator, so that-by pressing-on the treadle the angle arm is swung on'its pivot' and the short arm-Q, forces down thebar G and causes the-knife to perform 'its' cutting" action.

In Figs. .4 and 5 another forni of'cutting arrangement isshown, in'which 'instead ofthe head I and cutting, blade AJ.; tliereis pivoted. to the lower end ofthe bar G, 'one lade S'of a pair of shears', while 'the other blade T is rigidly secured or forn'iedwith. the 'baIG.' A

vThe blade S has a projecting part U to which-is pivoted the lower end of -a leve'r V,l

l 'end of tli'e bar G, the pivotedblade'S 'will pivo'ted at its upper end-to the lhead of the that as .the arm Q, presses down' on the upper' close 'against' the stationary 'blade and per'- fornr the work of cutting off the chain.

It will be noticed .that-in a bag sewing m'af chine as arranged in Fig. 1, the driving shaft. will be in an approximately verticalposition, `iivhil'e. .the `supplemental bar. Gr4 carrying the cutter .reciprocates at right an and. against the 'anvil or block` secured to thework plate ofthe machine this also being 'one of the features ofQmy. invention.

'Variousniinor modifications and changes .mayfbe made. without departing from the" spirit of myinvention.

thereof, and a cooperating stationary inem-- ber, the cuttingedges being arranged trans- 'verse -to the line of feed, means for preventing'the cutter b for movin@ the cutter 'bar substantially as described.

2. In a sewing machine, having an aplongitudinally;

proximately vertical bed plate, al horizon.-

tally arranged presser-bar carrying a presser foot-with coperating feed mechanism mech- .l anism forsevering the chain of stitching after the sewing has' 'been effected, including a horizontal cutter bar having longitudinal movement independent of theY presser bar and a cooperating member, with their cutting edges transverse reach 'of the operator, and 'a spring iachine, as shown at W, and it will be seen' les theretolnection with the r4 from turning and means bar,

to the line of feed, with means for. .operating the 'butter bar', said means includingA a'sWing-ing lever,4 'ivot'ed to the. machine frame-one arm'of'w 'ch in its movement engages the horizontal cutter bar, and the other arm extendngwithin' ingthe cutter bar normally'retracted; su

stantially as described.

3.' A sewing machine havinganap roXi-1 -inately' vertical bed'plate,v a horizonta yar- .ranged presser bar carrying a presser foot,

with coperating -feed mechanism,I a' bar parallel ,with the 'presser bar and connected.

with theila'tter to prevent swinging .thereof but having longitudinalmovement inde: pendent `of ingstationary ,cutting member rigid y attached toj a part .of themachine'frame,and

4."In` a sewing machine l said presserbar, a cutting-'mcin-- ber-carriedby said bar, with its cutting edge .l ope-rating. across the line of feed, a co eratproximate'lyglvertical cylindrical bed plate and stitch-forming mechanism, mechanism for severing the chain of stitching after the sewing has been effected, comprising a horizent-ally moving cutter` bar with'its cutting ledge transverse to the line of feed of the machine, and.; a coperating striking blockl or anvil secured to the outside .of said cy indrical casing orbed. plate, and' in line With said cutting edge, means for preventing said cutting -bar .from turning' and means for operating'said cutting bar, substantially as described.

5.- In a sewingmachine-having an approximately vertical bed p late,`a horizonte'l y ar# range-d presserfbar, a presser foot carried thereby, a cutter bar having a cross bar conpresser 'bar to'permit swinging movement o the latter, but having an independent longitudinal movement, a cutting blade carried by thelcutter bar, a spring attached at one end to a stationary part of the machine frame, and at'the other end at tachedto the cutter bar, anda swinging of which'in its movement engages the cutter .line with -the cutting blade; substantially as described;

In testimony where-of I aix my signature, in presen'ce of two Witnesses.

, CHARLES Witnesses:

.WILBUR L. SWIFT, LANSING ONDEnDoNirL- 'and the -other arm extending Within- FosfrER..

iio1E 

